./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:37:36,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:37:36,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:37:36,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:37:36,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:37:36,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:37:36,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:37:36,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:37:36,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:37:36,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:37:36,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:37:36,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:37:36,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:37:36,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:37:36,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:37:36,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:37:36,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:37:36,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:37:36,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:37:36,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:37:36,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:37:36,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:37:36,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:37:36,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:37:36,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:37:36,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:37:36,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:37:36,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:37:36,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:37:36,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:37:36,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:37:36,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:37:36,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:37:36,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:37:36,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:37:36,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:37:36,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:37:36,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:37:36,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:37:36,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:37:36,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:37:36,950 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:37:36,983 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:37:36,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:37:36,988 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:37:36,988 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:37:36,988 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:37:36,988 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:37:36,989 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:37:36,989 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:37:36,989 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:37:36,989 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:37:36,991 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:37:36,991 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:37:36,991 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:37:36,992 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:37:36,992 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:37:36,992 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:37:36,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:37:36,993 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:37:36,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:37:36,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:37:36,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:37:36,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:37:36,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:37:36,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:37:36,995 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:37:36,995 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:37:36,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:37:36,996 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:37:36,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:37:36,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:37:36,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:37:36,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:37:36,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:37:36,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:37:36,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:37:37,000 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:37:37,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:37:37,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:37:37,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:37:37,001 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:37:37,001 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 [2021-11-19 14:37:37,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:37:37,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:37:37,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:37:37,339 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:37:37,340 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:37:37,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/float-benchs/rlim_invariant.c [2021-11-19 14:37:37,423 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/data/74bc93d60/209064b586f64d978e84f9e043c35e7a/FLAG7e470fd5f [2021-11-19 14:37:37,932 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:37:37,933 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/sv-benchmarks/c/float-benchs/rlim_invariant.c [2021-11-19 14:37:37,947 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/data/74bc93d60/209064b586f64d978e84f9e043c35e7a/FLAG7e470fd5f [2021-11-19 14:37:38,306 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/data/74bc93d60/209064b586f64d978e84f9e043c35e7a [2021-11-19 14:37:38,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:37:38,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:37:38,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:37:38,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:37:38,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:37:38,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:37:38" (1/1) ... [2021-11-19 14:37:38,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69664afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:38, skipping insertion in model container [2021-11-19 14:37:38,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:37:38" (1/1) ... [2021-11-19 14:37:38,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:37:38,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:37:38,529 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2021-11-19 14:37:38,549 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:37:38,558 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:37:38,574 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2021-11-19 14:37:38,583 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:37:38,601 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:37:38,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:38 WrapperNode [2021-11-19 14:37:38,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:37:38,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:37:38,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:37:38,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:37:38,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:38" (1/1) ... [2021-11-19 14:37:38,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:38" (1/1) ... [2021-11-19 14:37:38,652 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2021-11-19 14:37:38,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:37:38,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:37:38,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:37:38,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:37:38,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:38" (1/1) ... [2021-11-19 14:37:38,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:38" (1/1) ... [2021-11-19 14:37:38,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:38" (1/1) ... [2021-11-19 14:37:38,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:38" (1/1) ... [2021-11-19 14:37:38,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:38" (1/1) ... [2021-11-19 14:37:38,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:38" (1/1) ... [2021-11-19 14:37:38,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:38" (1/1) ... [2021-11-19 14:37:38,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:37:38,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:37:38,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:37:38,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:37:38,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:38" (1/1) ... [2021-11-19 14:37:38,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:37:38,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:37:38,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:37:38,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:37:38,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:37:38,796 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:37:38,797 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:37:38,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:37:38,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:37:38,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:37:38,856 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:37:38,857 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:37:38,975 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:37:39,061 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:37:39,061 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:37:39,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:37:39 BoogieIcfgContainer [2021-11-19 14:37:39,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:37:39,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:37:39,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:37:39,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:37:39,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:37:38" (1/3) ... [2021-11-19 14:37:39,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec3561e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:37:39, skipping insertion in model container [2021-11-19 14:37:39,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:38" (2/3) ... [2021-11-19 14:37:39,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec3561e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:37:39, skipping insertion in model container [2021-11-19 14:37:39,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:37:39" (3/3) ... [2021-11-19 14:37:39,103 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2021-11-19 14:37:39,109 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:37:39,109 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:37:39,173 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:37:39,180 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:37:39,181 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:37:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:37:39,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 14:37:39,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:39,204 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:37:39,205 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:37:39,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:39,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1198132788, now seen corresponding path program 1 times [2021-11-19 14:37:39,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:37:39,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391529549] [2021-11-19 14:37:39,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:39,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:37:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:37:39,322 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 14:37:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:37:39,374 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 14:37:39,376 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 14:37:39,378 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 14:37:39,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:37:39,397 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-19 14:37:39,400 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:37:39,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:37:39 BoogieIcfgContainer [2021-11-19 14:37:39,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:37:39,456 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:37:39,457 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:37:39,458 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:37:39,459 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:37:39" (3/4) ... [2021-11-19 14:37:39,462 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 14:37:39,462 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:37:39,463 INFO L158 Benchmark]: Toolchain (without parser) took 1152.26ms. Allocated memory was 81.8MB in the beginning and 104.9MB in the end (delta: 23.1MB). Free memory was 45.3MB in the beginning and 80.9MB in the end (delta: -35.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:37:39,464 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 81.8MB. Free memory was 61.7MB in the beginning and 61.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:37:39,465 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.27ms. Allocated memory was 81.8MB in the beginning and 104.9MB in the end (delta: 23.1MB). Free memory was 45.1MB in the beginning and 80.9MB in the end (delta: -35.8MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-11-19 14:37:39,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.79ms. Allocated memory is still 104.9MB. Free memory was 80.9MB in the beginning and 79.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:37:39,467 INFO L158 Benchmark]: Boogie Preprocessor took 40.82ms. Allocated memory is still 104.9MB. Free memory was 79.3MB in the beginning and 78.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:37:39,468 INFO L158 Benchmark]: RCFGBuilder took 367.81ms. Allocated memory is still 104.9MB. Free memory was 78.2MB in the beginning and 67.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:37:39,469 INFO L158 Benchmark]: TraceAbstraction took 384.78ms. Allocated memory is still 104.9MB. Free memory was 67.1MB in the beginning and 80.9MB in the end (delta: -13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-19 14:37:39,469 INFO L158 Benchmark]: Witness Printer took 5.88ms. Allocated memory is still 104.9MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:37:39,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 81.8MB. Free memory was 61.7MB in the beginning and 61.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.27ms. Allocated memory was 81.8MB in the beginning and 104.9MB in the end (delta: 23.1MB). Free memory was 45.1MB in the beginning and 80.9MB in the end (delta: -35.8MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.79ms. Allocated memory is still 104.9MB. Free memory was 80.9MB in the beginning and 79.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.82ms. Allocated memory is still 104.9MB. Free memory was 79.3MB in the beginning and 78.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 367.81ms. Allocated memory is still 104.9MB. Free memory was 78.2MB in the beginning and 67.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 384.78ms. Allocated memory is still 104.9MB. Free memory was 67.1MB in the beginning and 80.9MB in the end (delta: -13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.88ms. Allocated memory is still 104.9MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 10]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 29, overapproximation of to_real at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 28. Possible FailurePath: [L14] float X, Y, S, R, D; [L15] int i; [L17] Y = 0 [L19] i = 0 VAL [i=0] [L19] COND TRUE i < 100000 [L21] X = __VERIFIER_nondet_float() [L22] D = __VERIFIER_nondet_float() [L23] CALL assume_abort_if_not(X >= -128.f && X <= 128.f) VAL [\old(cond)=1] [L8] COND FALSE !(!cond) [L23] RET assume_abort_if_not(X >= -128.f && X <= 128.f) VAL [D=49, i=0, X=50] [L24] CALL assume_abort_if_not(D >= 0.f && D <= 16.f) VAL [\old(cond)=1] [L8] COND FALSE !(!cond) [L24] RET assume_abort_if_not(D >= 0.f && D <= 16.f) VAL [D=49, i=0, X=50] [L26] S = Y [L27] Y = X [L28] R = X - S [L29] COND TRUE R <= -D [L29] Y = S - D [L32] CALL __VERIFIER_assert(Y >= -129.f && Y <= 129.f) [L10] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L10] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-19 14:37:39,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:37:42,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:37:42,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:37:42,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:37:42,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:37:42,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:37:42,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:37:42,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:37:42,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:37:42,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:37:42,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:37:42,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:37:42,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:37:42,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:37:42,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:37:42,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:37:42,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:37:42,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:37:42,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:37:42,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:37:42,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:37:42,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:37:42,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:37:42,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:37:42,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:37:42,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:37:42,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:37:42,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:37:42,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:37:42,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:37:42,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:37:42,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:37:42,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:37:42,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:37:42,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:37:42,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:37:42,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:37:42,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:37:42,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:37:42,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:37:42,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:37:42,276 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:37:42,309 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:37:42,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:37:42,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:37:42,311 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:37:42,311 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:37:42,312 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:37:42,312 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:37:42,313 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:37:42,314 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:37:42,314 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:37:42,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:37:42,317 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:37:42,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:37:42,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:37:42,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:37:42,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:37:42,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:37:42,320 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:37:42,320 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:37:42,320 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:37:42,321 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:37:42,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:37:42,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:37:42,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:37:42,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:37:42,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:37:42,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:37:42,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:37:42,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:37:42,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:37:42,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:37:42,324 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:37:42,325 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:37:42,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:37:42,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:37:42,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:37:42,326 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d395d439ec4556dc83dba3523bab6fe5cf68ec358a108cd3824067669c5e9bc5 [2021-11-19 14:37:42,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:37:42,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:37:42,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:37:42,782 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:37:42,783 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:37:42,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/float-benchs/rlim_invariant.c [2021-11-19 14:37:42,867 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/data/69341dddf/cb658b54e4154aba8cd5e2ac788a7da1/FLAGfb245673b [2021-11-19 14:37:43,467 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:37:43,468 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/sv-benchmarks/c/float-benchs/rlim_invariant.c [2021-11-19 14:37:43,476 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/data/69341dddf/cb658b54e4154aba8cd5e2ac788a7da1/FLAGfb245673b [2021-11-19 14:37:43,810 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/data/69341dddf/cb658b54e4154aba8cd5e2ac788a7da1 [2021-11-19 14:37:43,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:37:43,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:37:43,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:37:43,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:37:43,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:37:43,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:37:43" (1/1) ... [2021-11-19 14:37:43,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3243f903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:43, skipping insertion in model container [2021-11-19 14:37:43,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:37:43" (1/1) ... [2021-11-19 14:37:43,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:37:43,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:37:43,992 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2021-11-19 14:37:44,010 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:37:44,024 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:37:44,039 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] [2021-11-19 14:37:44,046 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:37:44,062 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:37:44,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:44 WrapperNode [2021-11-19 14:37:44,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:37:44,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:37:44,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:37:44,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:37:44,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:44" (1/1) ... [2021-11-19 14:37:44,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:44" (1/1) ... [2021-11-19 14:37:44,119 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2021-11-19 14:37:44,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:37:44,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:37:44,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:37:44,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:37:44,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:44" (1/1) ... [2021-11-19 14:37:44,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:44" (1/1) ... [2021-11-19 14:37:44,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:44" (1/1) ... [2021-11-19 14:37:44,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:44" (1/1) ... [2021-11-19 14:37:44,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:44" (1/1) ... [2021-11-19 14:37:44,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:44" (1/1) ... [2021-11-19 14:37:44,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:44" (1/1) ... [2021-11-19 14:37:44,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:37:44,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:37:44,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:37:44,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:37:44,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:44" (1/1) ... [2021-11-19 14:37:44,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:37:44,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:37:44,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:37:44,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:37:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:37:44,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:37:44,271 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:37:44,271 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:37:44,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:37:44,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:37:44,346 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:37:44,348 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:37:44,663 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:37:44,670 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:37:44,670 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:37:44,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:37:44 BoogieIcfgContainer [2021-11-19 14:37:44,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:37:44,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:37:44,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:37:44,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:37:44,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:37:43" (1/3) ... [2021-11-19 14:37:44,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3884f27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:37:44, skipping insertion in model container [2021-11-19 14:37:44,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:37:44" (2/3) ... [2021-11-19 14:37:44,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3884f27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:37:44, skipping insertion in model container [2021-11-19 14:37:44,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:37:44" (3/3) ... [2021-11-19 14:37:44,697 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2021-11-19 14:37:44,703 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:37:44,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:37:44,786 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:37:44,794 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:37:44,794 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:37:44,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:37:44,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:37:44,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:44,825 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:37:44,825 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:37:44,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:44,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1358229485, now seen corresponding path program 1 times [2021-11-19 14:37:44,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:44,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760801168] [2021-11-19 14:37:44,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:44,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:44,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:44,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:44,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:37:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:45,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:37:45,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:37:45,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:37:45,279 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:37:45,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760801168] [2021-11-19 14:37:45,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760801168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:37:45,280 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:37:45,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:37:45,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823228851] [2021-11-19 14:37:45,283 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:37:45,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:37:45,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:37:45,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:37:45,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:37:45,337 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:37:45,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:37:45,365 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2021-11-19 14:37:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:37:45,367 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-19 14:37:45,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:37:45,384 INFO L225 Difference]: With dead ends: 42 [2021-11-19 14:37:45,384 INFO L226 Difference]: Without dead ends: 18 [2021-11-19 14:37:45,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:37:45,395 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:37:45,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:37:45,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-19 14:37:45,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-19 14:37:45,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 14:37:45,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-11-19 14:37:45,458 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 18 [2021-11-19 14:37:45,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:37:45,459 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-11-19 14:37:45,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:37:45,459 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-11-19 14:37:45,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:37:45,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:45,472 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:37:45,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:37:45,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:37:45,688 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:37:45,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:45,689 INFO L85 PathProgramCache]: Analyzing trace with hash -37923155, now seen corresponding path program 1 times [2021-11-19 14:37:45,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:45,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182349018] [2021-11-19 14:37:45,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:45,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:45,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:45,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:45,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_356e1086-b743-48c5-bd39-c6707ba99430/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:37:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:45,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:37:45,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:37:46,532 INFO L328 TraceCheckSpWp]: Computing backward predicates...